Ammonia Refrigeration Foundation Training

Heat Sensible heat Latent heat Temperature Enthalpy Pressure Temperature Relationship Pressure Saturation point Superheat Subcooling Vapour Compression Cycle System Components Application of scientific principles Vapour compression cycle Varying load & temperature Ancillary components Common running problems Flooded Evaporator Systems Refrigerant Metering Devices Functions Refrigerant Superheat Definitions Superheat in a working system Measurement Adjustment The Surge Drum Function Location Sub-System Pump Down Isolating upstream No frost/frost/no frost rule Zero/zero rule Downstream isolation Purging vapour Sub-System Break In Purging vapour safely Break in Pressure testing Leak testing Evacuation & dehydration Reinstating sub-system Removing Oil from a Vessel Pressurising methods Oil heaters Removing oil Measurement and record keeping Refrigerant Charging Safety & regulations Safety with cylinders Liquid charging Vapour charging Testing for full charge Disconnecting equipment Practical Tuition and Work Selecting & using PPE Identifying risks & hazards Identification of system components Measurements on a working system Observation of normal conditions Observation of fault conditions Testing for contamination by air & moisture Measuring system - suction, superheat Partial system pump down Valve isolation Observing no frost/frost/no frost rule Purging vapour into water Observing zero/zero rule Sub-system break in Pressure test sub-system Evacuate & dehydrate sub-system Reinstate sub-system Prepare oil rectifier for oil removal Operate oil heaters Remove oil from vessel Make log book entry Measure cylinder weight Charge liquid ammonia Pump down charging equipment